Ample of time people ignore open ports in their system. This raises the risk of security threats in the system. One among them is Port 135. If your firewall is not blocking this port, then there is risk of getting threats through that. There can be some annoying services in the background which might use up the port and leave it open. To find what ports are open in your system you can use a simple command in cmd. Run cmd and then type netstat -an and hit enter. Here -a offers a list of all listening ports and -n gives you list of all ports in alphabetical order. If you see 135 as listening then it is open. I will offer you steps to turn the same. Before doing any changes to stay on the safer side create a restore point, and backup your windows registry. To disable Dcom you will need to modify the registry file. For that click on Start > Run > regedt32. Hit enter and then locate the following - HKEY_LOCAL_MACHINE \ Software \ Microsoft \ OLE. In this look for EnableDCOM and modify the value to N. Now going with port settings. In the same way in registry look for HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Rpc. Then right click on the DCOM Protocols and delete all the values. Or simply just delete everything listed under highligt. Give OK and reboot your system. Once you are done with registry modification then go in Control Panel > Administrative Tools > Services. Disable Dcom services here. They are COM+ Event System, COM+ System Application & System Event Notification. Restart your system and done. Now you can check back again using netstat -an that port 135 is closed or not.
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